package cn.edu.ctbu.labtest.webapi;

import cn.edu.ctbu.labtest.core.PageUtils;
import cn.edu.ctbu.labtest.domain.Student;
import cn.edu.ctbu.labtest.service.StudentService;
import net.bytebuddy.TypeCache;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.*;
import org.springframework.data.web.PageableDefault;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Objects;

@RestController
@RequestMapping("/webapi/student")
public class StudentRestController {

    @Autowired
    StudentService studentService;

    /**
     * 读取的url:/webapi/student/list
     * @return
     */

    @GetMapping("list")
    public List<Student> getAll(){
        List<Student> students = studentService.findAll();
        return students;
    }
    /**
     * 分页，读取全部内容
     * @return
     */
    @GetMapping("/getbypage")
    public PageUtils getByPage(@RequestParam(value = "page",defaultValue = "0")Integer page,
                               @RequestParam(value = "size",defaultValue = "10")Integer size,
                               @RequestParam(value = "name",defaultValue = "")String name){
        //按id排倒序
        Sort sort=Sort.by(Sort.Direction.DESC,"id");
        Page<Student> studentPage;
        if (StringUtils.isEmpty(name)){
            Pageable pageable=PageRequest.of(page,size,sort);
            studentPage=studentService.findAll(pageable);
        }
       else {
           Student student=new Student();
           student.setName(name);

           Pageable pageable=PageRequest.of(0,10,sort);

            ExampleMatcher matcher=ExampleMatcher.matching()
                    .withMatcher("name",ExampleMatcher.GenericPropertyMatchers.contains());
            Example<Student> example=Example.of(student,matcher);

            studentPage=studentService.findAll(example,pageable);
        }
       PageUtils pageUtils=new PageUtils(studentPage.getContent(),studentPage.getTotalElements());

       return pageUtils;

    }

    /**
     * 读取的url:/webapi/student/get/id
     * @return
     */
    @GetMapping("/get/{id}")
    public Student get(@PathVariable Integer id){

        Student student=studentService.findById(id);

        student.setPassword("");

        return student;
    }

    /**
     * 新增学生的方法，/webapi/student/insert
     * @param student
     * @return
     */
    @PostMapping("/insert")
    public Student insert(Student student){
        Student student1=studentService.insert(student);

        return student1;
    }

    /**
     * 更新学生方法，/webapi/student/update
     * @param student
     * @return
     */
    @PutMapping("/update")
    public Student update(Student student){
        //读旧数据
        Student oldStudent=studentService.findById(student.getId());

        if(StringUtils.isEmpty(student.getPassword())){
            //没有新密码，就是旧密码
            student.setPassword(oldStudent.getPassword());
        }
        studentService.update(student);

        return student;
    }
    /**
     * 删除学生方法，/webapi/student/delete
     * @param id
     * @return
     */
    @DeleteMapping("/delete/{id}")
    public void delete(@PathVariable Integer id){
        studentService.delete(id);

    }



}
